Rotary pump.



PATENTED AUG. 13, 1907.

J. CLARK. ROTARY PUMP. APPLICATION FILED NOV. 14, 1905.

I \illllil JJIAOOB oLARK, or JOPLIN, irrss'ouar.

ROTARY Pour.

Specification of Letters Patent.

. Patented Aug. 13, 1907.

Application filed November 14, 1905. Serial No. 287,808

To all (uihmgit may concern-1 Q Be i known that I,.,Jscos CLARK, ,a citizen of the United States, residing at Joplin, in the county of Jasper and State of Missouri, have invented certain new and-useful improvements in Rotary Pump's, of

.which the following is a specification. 4

T The object of my invention is a rotary pump, simple and highlyeffective in operation, and so constructed as to be durable, not readily susceptible to injury and wear, and the parts of which are. easily accessible for repair. I a

- More particularly my invention relates to'a rotaryair-force and lift pump, in which air or other 'gaseous fluid under compression, or steam, is conducted through a hollow pump shaft, and, by a'novel structure of water chamber and false bottom, acts to draw the water into the p' p at the base of the barrel and to force the same into a spiral water lift.

Another object of my invention is a pump structure in which all the rotating parts are supported on ball bearings, and in which the ball bearings are so mounted or arranged as to be entirely above the water line of the pump, whereby they are free from injury" by water, and at the same time by virtue of their location" .and structure, as hereinafter to be described, are easy being had to the accompanying drawings, in which- Figure 1 is aview in elevationfpartly cross-sectional, of the assembled pump. Fig; 2 is a view on the' line 22 of Fig. 1. Fig. 3 is a cross-sectional view on the line 3-3 of Fig. 1? Fig. 4 is a cross-sectional View on the line 44 of Fig. 1 and Fig. 5 is an enlarged de-.

tailed view in cross-sectional elevation of the pump bottom of Fig.1.

Referring to Fig. 1, there is shown the hollow rotary pump shaft 1 carrying at-its lower end the spiral 2, and

at its upper end a bevel gear 3 fixedly secured thereto,-and engaging a bevel gear 4 on shaft 5 by which the pump is'driven. Shaft 1 and the'parts mounted thereon are all supported by means of a sleeve or collar 6 secured to the shaft by setsscrew 7 through bushing 8,

and carrying a disk or bearing plate '9 which rests upon ball bearings 10 in hell ways 11 onta similar disk or bearing plate 12. .The bearing 12 is suitably secured by bolts '13 to a fixed external supportpr platform 14 of any suitable nature. The entire bearing is preferably inclosed' in a. housing 14 on the support 14, and

provided with suitable means of access to the bearings, as for instance oiling.

The water spiral 2 is inclosed by the water barrel l5, suitably positioned below the shaft supporting hearing described. The barrel 15 is slightly spaced from the spiral 2, as indicated at 16, whereby any. wear ofthe spiral against the barrel is obviated. The barrel extends above the spiral in the usual way to provide for the water column to the overflow or off-take 17. It will be noted that the overflow, together-with the water barrel and all its contained parts lie entirely below the shaft bearing, whereby the bearings are arranged ,to be at all times accessible and above water level. Furthermore, the bearings although shown as positioned below the driving gear, may be situated above the same, and in some instances such latter arrangement would be preferable, as rendering the bearings more open to inspection, repair and adjustment.

Referring to Fig. 5 the spiral 2 is seen to terminate at a false bottom 18 in the barrel 15. The barrel itself and the hollow driving shaft 1 terminate in a diaphragm 19 forming, with the walls of the barrel and false bottom 18, a water chamber 20. The hollow shaft 1 is closed in the diaphragm 19 as bya plug 21, but communicates with the water chamber 20 by means of perforations or openings 22. The diaphragm 19 is provided with perforations or water passages 23to the water chamber 20'.

The false bottom 18 has a central opening 24 of larger diameter than the internal diameter of the spiral 2, but

of less diameter than the external diameter of the spiral so as to be overlapped by the blades of the spiral. By means of this opening the water chamber communicates with the spiral and water barrel. No particular manner of mounting the diaphragm 19 and the false bottom 18 is essential to my invention. I have, however, shown the false bottom 18 as'secured to and resting upon a sleeve or ring 25, in turn secured to or integral with the diaphragm 19, which latter may be suitably secured by screws 26, or their equivalent, to the barrel.

The hollow shaft 1 is in communication at.its upper end. with a source of compressed air, or other expansible fluid, such for instance, as steam, and at the point of juncture therewith is embraced by the stuffingbox or packing 27 to prevent leakage.

I In operation, the pump shaft 1 is rotated from the shaft 5, which latter is in turn driven from a motor of any'suitable type, and the shaft 1 drives the, spiral mounted thereon in the direction indicated by the arrow.- Simultaneously, the compressed air or other fluid, entering the hollow shaft 1 at 27, passes down therethrough and passing through the openings 22 enters the water chamber 20. Thence passing upward through the opening 24 intothe spiral the air draws the water through the openings 23 into the water chamber and forces the same through the opening 24 into the spiral. 'The blades of the spiral overlapping the hole in the false bottom and rotating at considerable speed create a funnel suction effect, assisting the in forcing the water into the spiral, and the spiral then acts in the usual way to feed and lift the water column in the upper part of the barrel to the overflow or off-take 17. Upon a cessation of the rotationof the pump shaft, there being port above the water line and ground, and these are made of such material as invlove the least possible friction." Y I Although I have shown and described in detail an embodiment of my invention it is apparent that the precise structure shown may be altered in many respects without involving a departure from the scope of the invention.

1. In a rotary pump, a hollow pump shaft, a spiral water .lift thereon, a source of compressed air or other suitable fluid in connection with the interior of said shaft, and an exit for said fluid from said shaft to feed the water. to said water lift.

2. In a rotary pump, a hollow-pump shaft, a water lift- 4. In a rotary pump, a hollow rotary pump shaft, a-

spiral water lift rigidly mounted thereon, a source of air in connection with the interior of said shaft, and an air exit from said shaft to feed the water to said water lift.

5. Ida rotary pump, a hollow pump sha'ft, a spiral water lift thereon, a source of compressed air or other suit-, able fluid in connection with the interior ofsaid shaft, and

an exit for said fluid from said shaft at the end thereof to feed the water to said water lift.

6. In a rotary pump, a hollow pump shaft, a spiral water lift thereon, a source of compressed air or other suitable fluid in connection with the interior of said shaft, and

a lateral exit for said fluid from said shaft to feed the wa-,

ter to said water lift.

7 7. In a rotary pump, a hollow pump shaft, a spiral water lift thereon, a source of compressed air or other suitable fluid in connection with the interior of said shaft, a pump barrel embracing said spiral, a false bottom in said barrel below said spiral, a water chamber below said false bottom, a'bottom to said water chamber, an exit for said fluid from said hollow shaft into said water chamber, a water inlet into said water chamber, and a passage through said false bottom from the water chamber to the spiral.

8. In a rotary pump, a hollow shaft, a spiral water lift thereon, a source of air in connection with the interior" of said shaft, a pump barrel embracing said spiral, a false bottom in said barrel below said spiral, a water chamber below said false bottom, a bottom to said water chamber,

an air exit from said hollow shaft into said water chamber,

a water inlet into said water chamber, and a passage through said false bottom from the water chamber to the spiral.

9. In a rotary pump, a hollow pump shaft, a spiral water liftthereon, a source of compressed air or other suitable fluid in connection with the interior of said shaft, a pump barrel embracing said spiial, a false bottom in said barrel below said spiral, a water chamber below said false bottom, a bottom to said water chamber, an exit for said fluid from said hollow shaft into said watenchamber, a water inlet into said water chamber through the hottom there of, and a passage through said false bottom from the water chamber to the spiral.

10. In a rotary pump, a hollow shaft, a spiral water.

lift thereon, a source of compressed air or other suitable fluid in connection with the interior of said shaft, a pump barrel embracing said spiral, a false bottom in said barrel below said spiral, a water chamber below said false bottom, a bottom to said water chamber, said shaft extending through said false bottom and water. chamber, a lateral exit for said fluid from said hollow shaft into said water chamber, a water inlet into said water chamber, and a passage through said false bottom fromthe water chamber to the spiral. I I I '11. In a rotary pump, a hollow pump shaft, a spiral water lift thereon, a source of compressed air or other suitable fluid in-connection with the interior of said shaft,

a pump barrel embracing said spiral, a false bottom in said barrel below said spiral, a waterchamber below said false bottom, a bottom to said water chamber, said shaft extending through said falsebottom and water chamber, a lateral exit for said fluid from said hollow shaft into said water chamber, a water inlet into said. water chamber through the-bottom thereof,'and a passage through said false bottom-from the water chamber to the spiral.

12. -In a rotary pump, a hollow pump shaft, a spiral water lift thereon, a source of compressed air or other suitable fluid in connection with the interior of said shaft, :1 pump barrel embracing said spiral, a false bottom in said barrel immediately at the base of said spiral, a water chamber below said false bottom, a bottom to said water chambenan exit for saidfluid from said hollow shaft into said water chamber, awater inlet into said water chamber, and a passage through said false bottom from the water.

chamber to the spiral, said passage being centrally disposed and ofa diameter intermediate the inner and outer I diameter of the spiral blades.

13. In arotary pump, a hollow pump shaft, a spiral Water lift thereon, a source of compressed air or other suitable fluid in connection with the interior of said shaft,

- a pump barrel embracing said spiral, a false bottom in said barrel immediately at the base of said spiral, a water chamber below said false bottom, a bottom to said water chamber, an exit for said fluid from said hollow shaft into said water chamber, a plurality of small water inlets into said water chamber, and a passage through said false bottom from the. water chamber to the spiral, said passage being centrally disposed and of a diameter intermediatethe inner and outer diameters of the spiral blades,

14. In a rotary pump, a hollow rotary pump shaft, a

spiral water lift rigidly attached thereto, a source of compressed air or other suitable fluid in connection with the interior of said shaft, a pump barrel embracing said spiral, a stationary false bottom in said barrel below said spiral, a waterlchamber below said false bottom, a bottom to said water chamber, an exit for said fluid from said hollow shaft into said water chamber, a water inlet into said water chamber, and a passage through said false bottom from the water chamber to the spiral.

15. In a rotary pump, a hollow pump shaft, a spiral water. lift thereon, a source of compressed air or.other suitable fluid in connection with the interior of said shaft, :1 pump barrel embracing said spiral, a false bottom. in I said barrel belowsaid spiral, a water clfamber below. said false .bottom, a bottom to saidwater chamber, a projecting member attached to said water chamber bottom and upon which said false bottom rests, an exit for said fluid from said hollow shaft into said water chamber, a water inlet into said water chamber, and a passage through said false bottom from the water chamber to the spiral.

16. In a rotary pump, a rotary hollow pump shaft, a spiral water lift thereon, an opening in said shaft near the spiral, a stufling box at the other end of the shaft, and a stationary fluid supply pipe in connection with the hollow shaft at the stuffing box.

17. In a rotary pump, a hollow pump shaft, a spiral water lift thereon, a source of compressed air or other suitable fluid in connection with the interior of said shaft, a pump barrel embracing said spiral, a false bottom in said barrel below said spiral, a water chamber below said the water chamber to the spiral.

18. In a rotary pump, a hollow pump shaft, a spiral a water lift thereon, a source of air or other suitable fluid in connection with the interior of said shaft, a pump in connection with the interior of said shaft, a pump barrel inclosing said spiral,'a false bottom immediately beneath the spiral, an opening in the diaphragm intermediate the internal and external diameters of the spiral blades, a water chamber below said false bottom and an opening for said fluid from the hollow shaft into the water chamber.

20. In a rotary pump, a hollow pump shaft, a spiral water lift thereon, a source of air or other suitable fluid in connection with the interior of said shaft, 8. pump barrel inclqsing said spiral, a diaphragm closing said barrel immediately beneath the spiral, an opening in the diaphragm of adiameter intermediate the internal and external diameters of the spiral blades, and an opening for said fluid in the shaft below the diaphragm.

21. In a rotary punip, a hollow pump shaft, means for driving said shaft, a spiral water lift at the base of said shaft, bearings for supporting said shaft and its attached parts, consisting of a bearing disk securedto said shaft, a stationary platform carrying an opposing bearing disk, and balls in grooves thereon, on which balls the shaft bearing disk rests, a pump barrel spaced at a distance below said bearings, a water over-flow or oft-take at the top of said barrel also well below said bearings, and a source of compressed air or other suitable fluid in connection with said hollow shaft at a point above said bearings.

In testimony whereof I have aflixed my signature in presence of two witnesses. I

JACOB CLARK.

Witnesses:

' A. M. Hss vnnn,

F. L. HARDY. 

